Applicability constraints of the equivalence theorem



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Dobado González, Antonio and Peláez Sagredo, José Ramón and Urdiales, M.T. (1997) Applicability constraints of the equivalence theorem. Physical Review D , 56 (11). pp. 7133-7142. ISSN 0556-2821

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In this work we study the applicability of the equivalence theorem, either for unitary models or within an effective Lagrangian approach. There are two types of limitations: the existence of a validity energy window and the use of the lowest order in the electroweak constants. For the first kind, we consider some methods, based on dispersion theory or the large N limit, that allow us to extend the applicability. For the second, we obtain numerical estimates of the effect of neglecting higher orders in the perturbative expansion. [S0556-2821(97)04421-4].

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© 1997 The American Physical Society. J.R.P would like to thank the Theory Group at Berkeley for their kind hospitality, the Jaime del Amo fundation for financial support, as well as M.J. Herrero and H.J. He for helpful discussions on the subject. This work has been partially supported by the Ministerio de Educación y Ciencia (Spain) Grant No. CICYT AEN93-0776).

Uncontrolled Keywords:Chiral Perturbation-Theory, Symmetry-Breaking Sector, Interacting Higgs Sector, Standard Model, Heavy Higgs, Precise Formulation, Weak Interactions, Lagrangians, Scattering, Unitarity
Subjects:Sciences > Physics
ID Code:22738
Deposited On:10 Sep 2013 15:14
Last Modified:12 Nov 2014 11:44

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